Updated For 5.4 Mists of Pandaria

Gem Quality

Color Popularity Gem Quality Auction Price
Red/Yellow/Blue 6 star Void Sphere
+4 Resist All
Epic
Blue 6 star Solid Serpent's Eye
+480 Stamina
Epic
Red/Blue 6 star Etched Shadow Spinel
+25 Strength and +25 Hit
Epic